I'm at my wits end :( ?

If any of his ejaculate was released, then the possibility of pregnancy is there (this includes "pre-***"). Since it has only been a few days you would probably not be showing any symptoms quite yet (give it another week or two), but belly pain could be one of them. Morning sickness occurs in the first trimester and is one of the most common symptoms. You should probably get a pregnancy test done in a week or two. If you're very scared, you could go to the doctor and get a blood test done (more expensive but the results will appear earlier than what an over-the-counter test can do). Talk to the potential father, tell him what you suspect. And don't be afraid to talk to a doctor and your parents. You're going to need to figure this out and you're too young to do it alone.